: To reflect the aging of the royal family, the lead role of Queen Elizabeth II is played by three different actresses: Claire Foy (Seasons 1-2), Olivia Colman (Seasons 3-4), and Imelda Staunton (Seasons 5-6).

: It highlights the evolving relationship between the monarchy and various Prime Ministers, starting with Sir Winston Churchill.

: The show covers major 20th-century events including the Suez Crisis, the Aberfan disaster, and the marriage of Prince Charles to Lady Diana Spencer.